Adding-machine.



w. 1. PAslNsK1.

ADDING MACHINE.

AFIIICATION FILED AIIG. I8I3- IIENEVIED SEPT. I3. I9I6.

Patented Apr. 17,1917.

2 SHEETS-SHEET. 2.

vUNIIIED STATES PATENT OFFICE;

VVVALTIER J'. PASINSKI, 0F DETROIT, MICHIGAN, ASSIGNOR TO'BUBROUGHS ADDING MACHINE COMPANY, yOF DETRIT, MICHIGAN, A'COBPQRATION 0F MIGHIGAN.

ann1ue-inviarmi.A

.Patented Apr. rz, 1am.

.Application filed August 8, 1913, Serial No. 783,703. Renewed September 13, 191B. Serial No. 119,979.

- To all whom it may concern-f Be it known that I, VALTER J. P AsINsKI, a citizen' of the United States, residing at Detroit, in the county of lVayne and State of Michigan, have invented certain new and useful Improvements in Adding-Machines, ofwhich the following is a specification.

' This invention relates to the type of add- ,ing machines shown in prior Patents Nos.-

l,()l6,501 and l1,023,168 issued February 6, 1912, and April 1G, 1912, respectively. In theseV machines the turning of wheels to effect registration is done by. return of spring-actuated levers after displacement thereof by depressible keys and release of the latter. rIhe keys are arranged in rows each row made up of nine keys numbered from 1 to 9 and constructed and arranged to act upon. the associated registering lever at varying distances from its pivot, the 9- key acting nearest the pivot the8-key a step farther away and so on. Upon reference to said prior patents it will -beA observed that the acting lugs of the keys are not normally in engagement. .with the lever, the latter- 'v being stopped in its return movement by contact 'of its forward end with a cross bar, and it will further be' observed that the lugs of the lower denomination keys 1 and 2 are spaced Afarther from the lever than the lugs of o-ther keys. This isfso because of a purpose to arrange for 'uniform dip or eX- tent of depression of all of the keys while at the same time preserving a compact arrangement of the keys with their tops spaced slightly and uniformly from each other from front to'rear. The keys are normally upheld bv comparatively light springs and it has been found that, owing .to the relatively slight resistanee `to depression of `the lower denomination keys prior to their striking the lever, there nity be a failure to fully depress these keys against the considerably greater' resistance offered by the ,relatively strong springwhich upholds the lever. The lost motion between the lugs of the other keys and the lever is so slight that the variation in resistance to their `depression does not have to be taken into account, the extent. ofk their depression against the lighter resistance being so very short that the ysensation is lthat of apresistance froni'the-beginning. In ease of the lower denomination keys however the extent-of depression against the lighter resistance is ofsucb. extent as to vbe distinctly vplying finger-pressure against the heavierV noticeable so that therefis an inclination to In the form of embodiment of Amy inven- .I

tion-here shown, I.. accomplish the desired result by interposing between the lower de nomination keys and the lregistering lever other levers which are in l.direct engagement with the lugs of the key stems and vwhich have a shifting contacter engagement with the registering' lever so that displacement of the latter is inreduced ratio to the depression of thevkeys. A

yOf the accompanying drawings which form apart of this specification, Figure 1. illustrates in sectionalized right-side eleva tionaimachine of the/type shown in said prior patents, having embodied therein parts for carrying ont. my present invention Fig. .2 is a similar viewisliowing one of the keys depressed; and Fig il is a horizontal section. taken substantially on the line 3-3 of Fig. li

Reference may be had' to the aforesaid prior lpatents for an understanding of ta maehinefproper in ali its detaiis, i will suiice' to designate a few the fa iniliar'parts of said ma chine with which the parts introdud 'for carrying eut my invention are morcintimately associated..

designates thestems ,of al row of keyswhich stems are formed ywith lugs d? extending above the registering lever F, the latter' be` the lever than are the lugs of the'I other keys.

The key stems are slotted longitudinally as usual and frame cross rods a extend through the slots and limit the descent of the keys.

carrying out the present invention, I pivot 'upon the cross rod which guides and limits the Q-key, an irregulanshaped lever l0 which extends. forward from its said Vpivot and'. embraces the lug d? fof the l-key and at an intermediate point ,engages the registering lever F. I similarly pivot upon limits movement of the 3-key, a similar lever i0 which extends forward and embraces the lug Z2 of the Q-key and `at an intermediate poi-nt engages the registering lever F. These two irregular-shaped levers are of substantially the same shaper and yspecilic description ot1 one of them in this connec tion will suliice. Referring to Fig. 3, itavill be seen that the rear 'portion of the lever l0 runs behind or to the left of the stem ol1A the .f2-key where said lever pivots upon the rod and that there is an angular portion lOl which connects said rear portion with a Jforward portion extendi fg in front o or to the right of the 1-key. This forward portion which is thus offset with relation to the rear portion takes the form of a hook l0c which extends under the lug cl2 and beyond the saine and then upwardly and rearwardly above said lug, as shown in Figs. l and 2, with sulicient looseness to permit turning of the hook about the lug. A short rearwardly-projecting branch 10d of the lever adjacent the Icentral portion 10b supports a stud on which is'lmounted a roller l()e the latter engaging the upper edge of the lever F.

Itfwill be seen :that with the above-described construction the lower denomination key has its lug constantly' engaged with the hook of the intermediate lever so that the.

latter moves at all times with the key. It will furthermore be observed that though depression of the .key resultsimmediately in displacing the lever F, the disposltion of the intermediate lever is such-and the relation between the roller -10e and the lever F is such that the latter is not displacedv proportionately to the depression of .the

key butthat the ratio of ldisplacement of the Alever is reduced. This is of course owing to the shifting engagement of the intermediate lever with the lever F, the roller 10e traveling along the edgeotthellever as the key yis-depressed so that part of the key 70 depression is taken up in the swinginglothe intermediate lever,.and the displacement of the lever F is correspondingly lessened as compared with what the extent. of displacement would be nif the lug acted directly upon 7 5 Y must be understood that the invention is not necessarily limited to the particular'form of 4embodiment here shown, but is susceptible lof embodiment in other forms.

I claim: 1. In a machine ofthe class described the combination 'of a registering lever; a series "of keys constructed and arranged to act the frame cross rod a, which guides and.

upon said lever at increasing distances from the latters pivot; and means interposed between said lever and certain keys which act at the greaterdistances said means serving to impart movement to the lever though creating lost motion whereby displacement of the lever accompanying movement of said certain keys is reduced as related to the key-movement.

2. In a machine of the class described the combination of a registering lever; a series oit' keys constructed and arranged to act upon said lever at increasing distances from the latters pivot; and means interposed between said lever and certain keys which act at the greater distances said means serving to impart movement to the lever though effecting conversion of motion whereby displacement of the lever accompanying movement of said certain keys is reduced as related to the key-movement.

3. In a. machine ol the class described the combination of' a spring-held registering lever; a series of depressible spring-upheld keys to act -upon said lever at increasing distances from its pivot; and a lever through the medium of which a certain key acting at the greater dista-ncedisplaces the registering lever.

4. In a machine of the class described the combination of a spring-held registering lever; a series of depressible spring-upheld keys to act upon said lever at increasing distances from ,its pivot; and a lever through the medium of which a certain key acting at the greater distance displaces the registering levtlr through shifting engagement .theren 5. l'Ina machine of the class described the combination of la spring-held registering lever; 'a Series Of depressble spring-upheld ntemeiae its ens with said registering keys 'to act upon sind lever at mceasmg lever.,

distan@ from the pvet of ne 'egsteng lever7 having :L shifting. engagement S. Mmmm., 

